Machine for trimming metal parts



Aug. 25, 1931. A. H. WADELL 1,320,717

I MACHINE FOR TRIMMING METAL PARTS Filed Oct. 11, 1929 2 Sheets-Sheet 1I i /6 ii 1U KVA I INVENTOR jf yifl M W 2 4 4 ATTORN Aug. 25, 1931. A.H. WADELL 1,320,717

MACHINE FOR THINKING METAL PARTS Filed Oct. 11. 1929 2 Sheets-Sheet 2 II g i 1 INVENTOR Patented Aug. 25, 1931 UNITED STATES ALBERT H. WADELL,OF nEwAiaK, new; ma s:

MACHINE FOR Tami/ me METAL mm Application filed October 11, 1929. SerialNo. 398,866. I i

- The object of the invention is to provide a' machme which receives oneor two wheels which arerotated at selective speeds and are operated alltogether o-r-independently and in which a tool traverses the drums onthe wheels to provide a smooth surface on which the brake bands bear. I

Another object of the invention is to provide a self-contained unit ofthis kind which needs only to be connected with a source of electricpower and also one in which the supports for the wheels are relativelylow in order to make it easy to place heavy truck wheels and the like onthe spindles of the machine.

The machine is illustrated in the accompanying drawings in which Figure1 is a side view of my improved machine and Figure 2 is a top viewthereof. Figure 3 is a cross section of part of the machine and showingthe driving mechanism of the tool hold-er and the spindles. Figure 4 isa section on line 4-4 in Figure 3 and Figure 5 is a section on line 5-5in Figure 3. Figure 6 is a perspective view of a part of the gear shift.

The machine illustrated comprises a base 10 on which is secured thecasing llwhich "has a central compartment 12 for the inner turn thearticles to be tooled. The-casing 11 also has the side tracks or rails14 on which the tool carriages 15, are made to slide: The spindles 13carry the articles such as wheels and brake drums and the tool carriageshold the tool shaft 16 which in turn hold the tools 17 which traversethe face such as the face 18 of the article shown at 19. p

' The machine is adapted to hold various sizes of wheels or hands and tobe run at Various and different speeds. That is, the wheels at both endsof the machine can be turned at slow speeds or one can be turned slowlyand the other turned at higher speed accordends of the spindles 13 whichsupport and ing to the'requirements'. in each particular case.

The two spindles 13 are drivengeachby a gear connection, one connectionconsisting of y a gear 2.0QOIi one of the spindles 13 and a gear ii 21onthe short shaft 22eandathe other consisting of a gear 23 on the others'pindlesl3 and a gear 24. on. the short shaft 25. ,The shafts 22 and 25are connected by gears2tfv and 27. The gear 27 is driven through a gear36 shift mechanism from the mainshaft 28'. I

- The, main shaft is driven by a motor29 (see Figure 1) through the worm30'and the worm gear 31.

The gear shift consistsiof; gear 32 i5 able on the main shaft 28 anddriven thereby-.- The gear 32 and the idleigear. 33 are secured to thebracket 34 andare raised, loweredand turned by a 'ha-ndle35 on thebars,3 6of the bracket.v The bars 36 operatein: a slot 37 it? (seeFigure 2) in the top of the housing 38 which covers the above describedgear con,- nectio ns. The gear 33 can beswungto engage the multiple gearincludingvgear 27 I above mentioneclor the gears 39 a nd 40, to i6 varythe speed of the shafts-22 and 25'. The ear 26 is connected at will tothe shaft 25 by the clutch .40 operated by the yoke 41and the shaft 42and handlef43. nThemultiple gear is connected to the shaft 22 throughtheclutch 44 operatedbyyoke 45 ion the shaft 46 and operated by handle 47This'i'nechanism provides for the-selective operation and speed of,the/two oppositely extending spindles I3.

'The carriages 1.5 which travel back and 5e forth on" the tracks v14 aredriven normally by the screws 48 which arearranged to rotate in hearingsin the casing a'nd in the nuts 49 on the carriages 15. Each screw 485srotated by a gear "50 in mesh with 'a'gear 51 96 on the shaft 52. Theshaft 52 is coupled to ashaft 53 by the clutch 54. The shaft 52 has alongitudinal play and is provided with a hand wheel 55. When the wheeland v shaft 52 are pulled out to disengage the clutch 54, the carriageis moved by the hand wheel rotation. This is for adjustment of the car'-riage and its tool holder relative to the work. After adjustment iscompleted the clutch 54 is engaged and the tool operates on the work it:

by reason of the rotation of the shaft 53 by gear wheel 56 in mesh withgear 57 on shaft 58 which is geared at 59 to the main shaft 28.

The carriage 15 includes a fixture 60 which is slidable transversely onthe tracks 61 by the screw 62 worked by handle 63. The fixture 60 ispreferably rovided with the holders 64 in either or bot i of which thetool bars 16 can be held by bolts 65. i

It will be evident from this description and the drawings that themachines can be used to finish two brake drums at the same time, atselective speeds and in a short time. The utility of the machine will beapparent and changes can be made in the various parts without departingfrom the scope of my in- V vention.

I claim 1. A machine for trimming brake drums comprising a housing, amotor in the lower art of the housing, a pair of wheel-supportingspindles, one projecting from each end of the housing, mechanismenclosed in the upper part of the housing above the spindles, saidmechanism being connected to the motor and the spindles and includingclutches operate the spindles selectively, and carriages mounted toslide at the sides of the casing, tool holders for carrying tools beyondthe casing for operation on wheels mounted on the spindles and a speedcontrol device interposed in the said mechanism for controlling thespeed of the spindles.

2. A machine for trimming brake drums comprising a housing, a motor inthe lower part of the housing, a pair of wheel-supporting spindles, oneprojecting from each end of the housing, mechanism enclosed in the upperpart of the housing above the spindles, said mechanism being connectedto the motor and the spindles and including clutches operate thespindles selectively, and carriages mounted to slide at the sides of thecasing, tool holders for carrying tools beyond the casing for operationon wheels mounted on the spindles, a speed control device interposed inthe said mechanism for controlling the speed of the spindles and handlesone on each clutch and one on the speed control device, said handlesbeing arranged on the outside of the casing and at the top thereof toallow control from one point of the operation and speed of the spindles.

In testimony whereof I aflix my signature.

ALBERT H. WADELL.

